There is now a new IRC channel, #openvpn-windows, on Freenode (details) aimed at people with vested interested in the Windows port of OpenVPN. Developers, packagers, testers and power users alike are all welcome!

Note that the channel is not currently the first level support channel for OpenVPN Windows users. This is because most issues with OpenVPN on WIndows are not Windows related, and you will simply get better answers faster at #openvpn. In the case your problem is really related to Windows, you will be redirected to #openvpn-windows as necessary.